[AD] 20171116 作業 1

Question

迴文判斷

迴文是指一個字串從前面讀過去跟從後面讀過去是一樣的

所以 abcdcba 是一個迴文

請寫一個程式判斷書入的字串是不是迴文

輸入說明：

會輸入一個字串，字串中間不會包含空白字元

輸出說明：

如果輸入的字串是迴文，請輸出YES，反之則輸出NO

輸入範例：

abcdcba

輸出範例：

YES

Answer 1

Hidden content!
 ** *  ****    *    **  *  
 ****  *  ***  ** **** 
* *****  
int ** * 
{
* ****  *  **    char   *  = **** 
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  ****  ******* int x = **  *  **
  * * * 
  **** **  * ***** int i, * 
  * * *     **  for(i = 0; i *    * x / 2 ; i++)
*  *  * * *     {
** *    ***  *          * ** **** == a[x - i - 1])
 *** **  *   **   * ** *  ** **  * * *   *** ** flag = 1;
**  ** *    * *   *  * * **   *   else
*   *  * * ** ***   ***  {
  ****       *  * ** *** ***  * * * * **  **** * flag = 0;
* ***  *** **  *      * **  * *** *    * * **  *** *
    *   *      **  ** ** ** }
*  *    ***  }
 * **  * *  **   * *   * == 1? **    ** *        : **  * **    * 
* *    
*** *  *  * **  *   ** 0;
}

Comments

prog.c: In function 'main':
prog.c:7:4: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
  x=strlen(a);
    ^~~~~~
prog.c:7:4: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:4: note: include '<string.h>' or provide a declaration of 'strlen'

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

prog.c: In function 'main':
prog.c:6:10: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
          ^
prog.c:6:11: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
           ^
prog.c:6:12: error: stray '\235' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
            ^
prog.c:6:13: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
             ^
prog.c:6:14: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
              ^
prog.c:6:15: error: stray '\202' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
               ^
prog.c:6:16: error: stray '\357' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                ^
prog.c:6:17: error: stray '\274' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                 ^
prog.c:6:18: error: stray '\202' in program
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
                  ^
prog.c:6:7: error: array size missing in 'a'
  char a[]\xef\xbc\x9d\xef\xbc\x82\xef\xbc\x82;
       ^
prog.c:11:23: error: stray '\357' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                       ^
prog.c:11:24: error: stray '\274' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                        ^
prog.c:11:25: error: stray '\211' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                         ^
prog.c:12:6: error: expected ')' before 'if'
      if(a[i]==a[j])
      ^~
prog.c:24:2: error: expected expression before '}' token
  }
  ^

---

prog.c: In function 'main':
prog.c:6:9: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
         ^
prog.c:6:10: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
          ^
prog.c:6:11: error: stray '\221' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
           ^
prog.c:6:12: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
            ^
prog.c:6:13: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
             ^
prog.c:6:14: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
              ^
prog.c:6:15: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
               ^
prog.c:6:16: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                ^
prog.c:6:17: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                 ^
prog.c:6:18: error: stray '\357' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                  ^
prog.c:6:19: error: stray '\274' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                   ^
prog.c:6:20: error: stray '\220' in program
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
                    ^
prog.c:6:7: error: array size missing in 'a'
  char a[\xef\xbc\x91\xef\xbc\x90\xef\xbc\x90\xef\xbc\x90];
       ^
prog.c:11:23: error: stray '\357' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                       ^
prog.c:11:24: error: stray '\274' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                        ^
prog.c:11:25: error: stray '\211' in program
      for(j=x-1;i<j;j--\xef\xbc\x89
                         ^
prog.c:12:6: error: expected ')' before 'if'
      if(a[i]==a[j])
      ^~
prog.c:24:2: error: expected expression before '}' token
  }
  ^

---

Case 0: Wrong output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Wrong output

---

Case 0: Correct output
Case 1: Correct output

Answer 2

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    *  ** **  **  ***
 *******    * * **   *
int main()
{
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****   ***     **  ***** *   * * **  ** * ** * *  * *  ** *     c=0;
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** ** ** *   ** return 0;
}

Comments

Case 0: Wrong output
Case 1: Wrong output

---

Case 0: Wrong output
Case 1: Correct output

---

Case 0: Wrong output
Case 1: Correct output

---

Case 0: Correct output
Case 1: Correct output

Answer 3

Hidden content!
#include * *  * *   **  * * 
#include  ****    **** *
 
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 {
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Comments

Case 0: Wrong output
Case 1: Wrong output

---

prog.c: In function 'main':
prog.c:25:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:28:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("Yes\n", s);
               ^~~~~~~
prog.c:30:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("NO\n", s);
               ^~~~~~
/tmp/ccSNkWCs.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.

Answer 4

Hidden content!
#include **** **   *  **
#include     ****   **  **
int main()
{
**** *   *    * * char *** **  **
* *  *** *** int i,j,z;
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** * *  * *  *     ** * *  ***  *** *   * * {
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* **  *     *  *  ****** ***
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}

Comments

prog.c: In function 'main':
prog.c:7:2: warning: 'gets' is deprecated [-Wdeprecated-declarations]
  gets(str);
  ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/ccB79V4N.o: In function `main':
prog.c:(.text+0x3c): warning: the `gets' function is dangerous and should not be used.

---

prog.c: In function 'main':
prog.c:7:10: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
  scanf("%s",&str);
          ^

Answer 5

Hidden content!
#include <stdio.h>
#include <string.h>
int main(){
  ****  * *   * ***   **  **  s1[500];
 *   * *  ** * * ***** **  * i,j;
**** * *     *  * * ***  *** ***    *****    *  * *
    *     **********   **  k=strlen(s1);

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* ***   *   ***** ** *** **  ****   *  **  ******  **   ** 
    }
  *  ** * *  ***** *** *  * ***** 
*** ** ****    * **     ****   *  ** ** *        **     * * ***   
    }
*  *        * ******   ****   0;
}

Comments

prog.c: In function 'is_palindrome':
prog.c:6:10: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    len = strlen(s);
          ^~~~~~
prog.c:6:10: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:6:10: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c: In function 'main':
prog.c:22:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/ccxt7lC3.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.

---

Case 0: Wrong output
Case 1: Wrong output

Answer 6

Hidden content!
#include <stdio.h>
#define N 20


int Cycle(char *s);


int main()
{
** *** ** *  ****  ***    * s[N];

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    }

 ** *  *    ** **   ***** * *  0;
}
int Cycle(char *s){
*  * *  ******  * *  ***** *  *h,*t;

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**  *  * *    *** *  *  **      *** **  *** *   **** * *** **** != *t) break;

  ** *  **  **   **  * *  *** t <= h;
}

Comments

prog.c: In function 'main':
prog.c:14:17: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[20]' [-Wformat=]
         scanf("%s",&s);
                 ^
prog.c: In function 'Cycle':
prog.c:32:23: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(h = s,t = s + strlen(s) - 1;t > h;h++,t--)
                       ^~~~~~
prog.c:32:23: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:32:23: note: include '<string.h>' or provide a declaration of 'strlen'

Answer 7

Hidden content!
#include <stdio.h>


int main()
{
    char s[100];
    int i, j, n;
  ** * *** ** * ** *   ** * * *** * ***     *  *** *  *
 * ***     ** *****   *    * ***      *   

   ****  *   *  *  ******   ** ** 
 *** * *  *  *  *  *** *    *  ** * **** * 
*  *** **  ** **  * * ***      * ** **  ****   *  **   *** break;
*   ****   *******  ******* *****  ***** **  ** * *     *  ** **  **    *
 *   ***      *    * *** * *** * * * ***** * *  *  * ****** ** ** **  * ** *  *** ** * ** ** ****
*        *  * * *   *  ***  * *     *** *     *  ** **  *** 
*   *  *** * *  * *  **  **  * * **  * * **   * * * **** *  ** * * *****  ** * * *  ****  *** ***  *
 *  ***  ** *      **    *** ** ****  ***** *  * *** * ** * * ***  ** **         0;
}

Comments

prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccDYUh1t.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.

---

prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/cc47s844.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.

---

prog.c: In function 'main':
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'

Answer 8

Hidden content!
#include <stdio.h>
#include<stdlib.h>

int main()
{
    char s[100];
    int i, j, n;
   ** *  * *     *  *     ***** *   * * ****** ** *  *** **   *
 ****   * ** *   * *   **   *      

   ** *     *  ***  ** *** **   *
*    * *** **    ***  ** * ****  * * * *    * *
 * * **** **      *   **   ****** * *  * **   ** *  *  *  break;
*** ** *** **   *  *  * *        * * **  *        *  ****  *  **
* * *   ***  *** ** ***     *  * ***** * *     **     ** * **  ***   ****  *  *** **** *  ** *  *  **** ** 
* **  **** ** * ****** **  *  *  * * * * ** ***** ****  **** **  
*****  * * * ******   * * **  *   ** *     *   *   *** * *     * * **      * * ******   **  **        *  *
}

Comments

prog.c: In function 'main':
prog.c:8:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'char *' [-Wformat=]
     scanf("%d",&s[n]);
             ^
prog.c:9:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(s);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
prog.c:11:7: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     n=strlen(s);
       ^~~~~~
prog.c:11:7: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:7: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccjI8t0q.o: In function `main':
prog.c:(.text+0x3f): warning: the `gets' function is dangerous and should not be used.

Answer 9

Hidden content!
#include  *  * ***  * * *  
#include  *** **  *** * 
** * * **
int is_palindrome(char *s) { 
 * *  **** *   * ** i, len; 
***   *****  * *  *  *   *
 **      * **      * = strlen(s); 
** *  *     ** * * *  * *
   * * ***    ***  *****  = 0; i < (len /2); i++) { 
   *****   *   **  **  **  ** *  * (s[i] != s[len-i-1]) 
 ** * ** **    *****    * **  **   *   *** ** *    0; 
  **   ** **  * *** ** 
**** *   **  **  **   ** 
*   * *** **  * *   **  * (i >= len/2) 
  *** * ****       *    *** ** *  *   *** 1; 
 *    * * ** ***   * * 
 *   *** * ** ***  * * ****** **   0; 
} 
  
int main() { 
 ****    ** *  **     s[256]; 
**  * *** *** ** * 
*  *  ** **   **  *  ***    { 
    **  ***    **   * * * ***  ***  
*   **** **     * *  ***  *    *  *
*  * * * *   *   ** ***  **    ** (is_palindrome(s)) 
   * ***       *    *    **  * ***   ***  ***** *** * **   **   ** *   * * 
*   *** *   * ***** * **  **  *  *   *    
 * ** *    * * ***   **   * * *        **  **   ** * **** * ** ***  * * 
**  *  * **  ***   * 
}

Comments

prog.c: In function 'main':
prog.c:24:6: warning: 'gets' is deprecated [-Wdeprecated-declarations]
      gets(s);
      ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/cc7oj25o.o: In function `main':
prog.c:(.text+0xae): warning: the `gets' function is dangerous and should not be used.

Answer 10

Hidden content!
     **       **  **    
* **      *  ** * ****  *  
int main()
{
   * * *   char  *  **
    *  ** **   int a,b,c;
*      **  
  **   ** ** **** *   *    ***      *  EOF)
   ****  * ***** {
*   *  * **    * **   *    * b = 1;
  ***     *      *  *     *     **  * a =   *  *
****  * *  ***  *   *     ***   
* ****  ****    *****  *   * ** **  *     a/2;c++)
*  ** *  *  **    * ** * **     * {
  * ***   *** *  *   * *** ** *      *  *   ******
       *      *   *      {
***  * *     * ***  *** *    ** * *  *     * **   b=0;
*  * *    *****   ** * *  * * *  * * ******** * * *  *   **  * *** * break;
 *** * *  *  *     **  **   *  * *  *   * *** *** }
*   *     **  *     ** *   *   }
 ***   * *   ***  *  * * *   if(b)
***   *   **** * *     * *   * *****    *        **    ***** *  **** * *   * * 
* ** *    **** *  * ** * ***  ** else
    * **   **         * **** ** *  * * * *  *  *******    ***      * * ****  ** *** 
  ***   ***        **  *    **     ** **   *   
 **  *    *    * **  * *   ** * **     break;
*  **   *****   }
 **   *    * ***  *  ** *  *** * * *** * 
   *** * *   **  return 0;
 ******          * * *
 * *  * 

Comments

prog.c: In function 'main':
prog.c:28:2: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
  system("pause");
  ^~~~~~